msg 1.12.11devel
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Macros | Enumerations | Functions | Variables
Warning Header

The Warning response-header field is used to carry additional information about the status of a response. More...

Macros

#define MSG_WARNING_INIT()
 Initializer for an msg_warning_t structure.
 

Enumerations

enum  { msg_warning_hash }
 

Functions

msg_warning_tmsg_warning_init (msg_warning_t x[1])
 Initialize an msg_warning_t structure.
 
int msg_is_warning (msg_header_t const *header)
 Test if header object is an instance of msg_warning_t.
 
msg_warning_tmsg_warning_dup (su_home_t *home, msg_warning_t const *header)
 Duplicate (deep copy) msg_warning_t.
 
msg_warning_tmsg_warning_copy (su_home_t *home, msg_warning_t const *header)
 Copy an msg_warning_t header structure.
 
msg_warning_tmsg_warning_make (su_home_t *home, char const *s)
 Make a header structure msg_warning_t.
 
msg_warning_tmsg_warning_format (su_home_t *home, char const *fmt,...)))
 Make a Warning header from formatting result.
 

Variables

msg_parse_f msg_warning_d
 Parse a Warning header.
 
msg_print_f msg_warning_e
 Print a Warning header.
 
msg_hclass_t msg_warning_class []
 Header class for Warning header.
 

Detailed Description

The Warning response-header field is used to carry additional information about the status of a response.

Its syntax is defined in [S20.43] as follows:

Warning = "Warning" HCOLON warning-value *(COMMA warning-value)
warning-value = warn-code SP warn-agent SP warn-text
warn-code = 3DIGIT
warn-agent = hostport / pseudonym
; the name or pseudonym of the server adding
; the Warning header, for use in debugging
warn-text = quoted-string
pseudonym = token

Macro Definition Documentation

◆ MSG_WARNING_INIT

#define MSG_WARNING_INIT ( )

Initializer for an msg_warning_t structure.

A static msg_warning_t structure must be initialized with the MSG_WARNING_INIT() macro. For instance,

#define MSG_WARNING_INIT()
Initializer for an msg_warning_t structure.
Definition msg_mime_protos.h:3852
Structure for Warning header.
Definition msg_mime.h:145

Enumeration Type Documentation

◆ anonymous enum

anonymous enum
Enumerator
msg_warning_hash 

Hash of Warning header.

Function Documentation

◆ msg_is_warning()

int msg_is_warning ( msg_header_t const *  header)
inline

Test if header object is an instance of msg_warning_t.

The function msg_is_warning() returns true (nonzero) if the header class is an instance of Warning header object and false (zero) otherwise.

Parameters
headerpointer to the header structure to be tested
Returns
The function msg_is_warning() returns true (nonzero) if the header object is an instance of header Warning header and false (zero) otherwise.

◆ msg_warning_copy()

msg_warning_t * msg_warning_copy ( su_home_t home,
msg_warning_t const *  header 
)
inline

Copy an msg_warning_t header structure.

The function msg_warning_copy() copies a header structure header. If the header structure header contains a reference (header->h_next) to a list of headers, all the headers in that list are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header structure header.

Parameters
homememory home used to allocate new structure
headerpointer to the header structure to be duplicated

When copying, only the header structure and parameter lists attached to it are duplicated. The new header structure retains all the references to the strings within the old header, including the encoding of the old header, if present.

Example
warning = msg_warning_copy(home, msg->msg_warning);
msg_warning_t * msg_warning_copy(su_home_t *home, msg_warning_t const *header)
Copy an msg_warning_t header structure.
Definition msg_mime_protos.h:3981
Returns
The function msg_warning_copy() returns a pointer to newly copied header structure, or NULL upon an error.

◆ msg_warning_dup()

msg_warning_t * msg_warning_dup ( su_home_t home,
msg_warning_t const *  header 
)
inline

Duplicate (deep copy) msg_warning_t.

The function msg_warning_dup() duplicates a header structure header. If the header structure header contains a reference (header->x_next) to a list of headers, all the headers in the list are duplicated, too.

Parameters
homememory home used to allocate new structure
headerheader structure to be duplicated

When duplicating, all parameter lists and non-constant strings attached to the header are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header.

Example
warning = msg_warning_dup(home, msg->msg_warning);
msg_warning_t * msg_warning_dup(su_home_t *home, msg_warning_t const *header)
Duplicate (deep copy) msg_warning_t.
Definition msg_mime_protos.h:3936
Returns
The function msg_warning_dup() returns a pointer to the newly duplicated msg_warning_t header structure, or NULL upon an error.

◆ msg_warning_format()

msg_warning_t * msg_warning_format ( su_home_t home,
char const *  fmt,
  ... 
)
inline

Make a Warning header from formatting result.

The function msg_warning_format() makes a new Warning header object using snprintf-formatted result as its value. The function first prints the arguments according to the format fmt specified. Then it allocates a new header structure, and uses the formatting result as the header value.

Parameters
homememory home used to allocate new header structure.
fmtstring used as a printf()-style format
...argument list for format
Note
This function may be implemented as a macro calling msg_header_format().
Returns
The function msg_warning_format() returns a pointer to newly makes header structure, or NULL upon an error.

◆ msg_warning_init()

msg_warning_t * msg_warning_init ( msg_warning_t  x[1])
inline

Initialize an msg_warning_t structure.

An msg_warning_t structure can be initialized with the msg_warning_init() function/macro. For instance,

msg_warning_t msg_warning;
msg_warning_init(&msg_warning);
msg_warning_t * msg_warning_init(msg_warning_t x[1])
Initialize an msg_warning_t structure.
Definition msg_mime_protos.h:3869
Parameters
xpointer to msg_warning_t structure

◆ msg_warning_make()

msg_warning_t * msg_warning_make ( su_home_t home,
char const *  s 
)
inline

Make a header structure msg_warning_t.

The function msg_warning_make() makes a new msg_warning_t header structure. It allocates a new header structure, and decodes the string s as the value of the structure.

Parameters
homememory home used to allocate new header structure.
sstring to be decoded as value of the new header structure
Note
This function may be implemented as a macro calling msg_header_make().
Returns
The function msg_warning_make() returns a pointer to newly maked msg_warning_t header structure, or NULL upon an error.

Variable Documentation

◆ msg_warning_class

msg_hclass_t msg_warning_class[]
extern

Header class for Warning header.

The header class msg_warning_class defines how a Warning header header is parsed and printed. It also contains methods used by message parser and other functions to manipulate the msg_warning_t header structure.


Sofia-SIP 1.12.11devel - Copyright (C) 2006 Nokia Corporation. All rights reserved. Licensed under the terms of the GNU Lesser General Public License.